Rotary engine-valve.



G. R. 'SPBNGER ROTARY ENGINEv VALVE. APPLICATION FLBD PB'BJ, 1913.

Patetea sep1;.22,1914.

2 SHEETS-SHEET 1.

l C. R. SPENCER. ROTARY ENGINE VALVE.

APPLICATION FILED FBBJ, 1913.

. Patented sept.22,19'14.

z SHEETS- SHEET z.

wa/mum Mew- 35 Willbecoine more apparent as the description renin-2 f1 ramene @BARRES SENCER', Ui ,ilif-Lilfl, GERGI, ASSGNOR OF ONE-THIRD T0 WALTER J. STRNU LND l'EmtHll T0 ROLN S. SASNETT, B'IH 0F ATLANTA, GEORGIA.

RTARY ENGINE-VALVE.

application sie@ rem-nary 7, :una

To all km/nit may concern of Ge0rgia,'have invented certain nevir and luseful improvements 1n Rotary Engine- Valves; and l do hereby declare'the following to be a full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make Land use the saine.

This invention comprehends improves.

ments in engines and relates more particularly to rotary valves for internal combustion engines oi the iour cycle type.

The primary object of the invention resides in the provision oit a rotary valve cornprising a hollow cylindrical body open at each end and divided longitudinally into two compartments, the body being-provided with novelly shaped intake and exhaust passages communicating with the respective compartments.

Another object of the invention resides l in the provision of a valve of this nature which will open the intake and exhaust ports quickly and which will gradually close the same in such a manner as to permit the incoming and outgoing gases to always take the shortest path.

The invention also aims to generally irn-y prove valves of this nature, tov render them ,more simple, efficient, and commercially desrable.

.ll ith these and other obgects 1n view, as

proceeds, the invention consists in certain novel features of construction, combination, and arrangement of parts, as will be hereiny.after described .and claimed.

For a complete understanding of my invention, reiference'is to be had to the following description accompanying drawings, in which, l.'

Figure 1 is a front elevation of an engine constructed in accordance with my invention, 2 is a vertical sectional view taken on the plane ci line 2-'2 of Fig. 1, Fig. 3 is a horizontal sectional view taken on the plane of line 3*?) of Fig. 2, Fig. 4 is a fragmentary sectional viewv taken on the plane of line i of Fig. 1, and, Fig. 5 is a detail perspective view of one of the valves.

VReferring in detail to the drawings by numerals, 6 designates, generally, a two-cyl Specification of Letters Patent.

Y Patented Sept. 232, 19ML.

Serial No. 746,976.

inder engine casting, 7 and 8 the Working cylinders, and 9 the valve casing. A Water jacket casing 1() surrounds the outer ends of thecylinders and the valve casing, and is provided withthe illing and drainopenings 6o 1-1 and 12, respectively. The valve casing 9 is essentially cylindrical in shape, extends transversely across the front of the' engine casting adjacent the outer ends of the cylinders, and communicates with said cylinders by means of the ports 13 and 14, respectively. The valve casing 1s formed 1nter1nediatc its ends with the intake opening 15 and adja-A cent each end with the exhaust openings 16 and 17. Upon reference to Fig. 2, it will.

be seen that these openings are-arcuately shaped and that the two exhaust openings are in the saine quadrant lwith each other but in a different quadrant with respect to the intake opening. Removable cover plates 18 close the ends of the valve casing and carry the exhaust pipes 19 and 20, Whichy f communicate with the exhaust openings'Y 16g and 17, respectively.

A valve shaft 21 extends longitudinally S0 through the valve chamber and has rigidly secured thereto the valves, generally designated 22 and 23, which control the flow of gases to and :troni the Working cylinders and 8, respectively. These valves are similar in construction -Witl the exception of the fact that their ports, flanges,l etc., extend in opposite or reverse directions. The valve 23 which is clearly shown in F ig. 5,

comprises a hollow cylindrical shell or body 24, which is divided longitudinally into two compartments by means oi" the core 25, rib 26, Aand spiral flange 27. The core is somewhat shorter than the shell and is formed with the bore 28, through which the valve e5 shaft 21 is adapted to pass. The flange 27 may be considered as beginning at the outer end of the shell 'and rib 26 and running spirally around the core until it reaches the inner end of theshell.

gitudinally into tivo compartments 29 and 30, Which open upon opposite ends 'of the valve. The shell is formed in one quadrant with an intake opening 31 of a somewhat 105 which extends longitudinally of the valve 11o This construe-` tion divides said shell, as before stated, lonshell, tlie'inner end Wall, the relatively cav' short outer end wall Bil, and a diagonal rear Wall 35. The end Walls extend parallel to the ends of the cylinder and form. in conjunction with the iront' and rear Walls, a somewhat triangular opening. The exhaust opening 36 is formed with the quadrant preceding that in which the intake opening is formed and communicates with the com partment 30. rlhe exhaust opening has straigl'at :forward wall which is parallel to the Wall 32 and which is equal in length to the pont lat formed in the cylinder 8.. The outer end Wall of the exhaustv opening is greater in length than the inner end Wall, thus giving to the exhaustJ opening a somewhat triangular' shape. Ilhe .rear of the exhaust opening is formed with a diagonal Wall 37 and a` straight Wall 38.

The valve 22 being of essentially the same construction as the valve just described, Will not be described in detail. lts shell 39. is divided longitudinally into an exhaust -Compartment and an intalie compartn'ient,

said last mentioned compartment having its open end opposed to the openeiid oi the compartment 29. The shell 39 is formed With intake and exhaust passages similar t0 those formed in` the shell 2a and the Valve is so lixed upon the shaft 21- as to permit the cylinder 7 to exhaust as thegases are flowing into the cylinder 8.

lt is to be understood that while li have shown my invention embodied inn two cyl inder engine, l do not Wish to loe limited in this respect, but may employ my valve-with an engine oi one or more cylinders.

The inner ends of the valves revolve against a flange 4.0 and locking rings 4l are threaded into the ends oit the valve chamber-,against the outer ends el the valves, thus holding the latter against longitudinal movement. The ends oi the valves are annulally recessed to receive the rings 42, which are loosely fitted Within said recesses and which serve to lreep the lubricant moving freely.

From the foregoing description in connection- With the accompanying drawings, it Will be seen that my improved valves open the passages 13 and lil suddenly and close said passages gradually. As the piston Within the working cylinder S is reaching the end o'l." the intake stroke, the diagcnal Wall gradually closes the port ll and it is to be noted that the inner end o'j this port is the last part of the same to be closed, therefore permitting the iinal volume of incoming gas to pursue the shortest possible course from the manifold through the intake por-t 15 into the cylinder. liVhen the cylinder is ready to exhaust, the passage lt opens quickly and the diagonal 'wall 37 I gr dually'closes the ,port la from the innerto the outer end thereof so that the ex.

Luned) haust gases take the shortest possible path to the exhaust manifold.

t'is to be understood-that While l have shown and described the preferred lconstruction oi: my improved valves, slight departures therefrom which would be aiLipar` 'ent to anyone skilled 1n the art, may be made oithe cylinders by Virtue thereof, the airis' of the casing being parallel to the cylinder port, said casing being formed With an intake opening centrally ot its ends and eX- haust openings adjacent its ends, and a pair lof rotary valves housed Within the casing tor individually controlling 'flow oit' gas into and from the cylinders, each Valve cornpiising a cylindrical shell open at each end and divided longitudinally into an intake compartment and au exhaust compartment, said compartments being "closed at one end. and opening upon opposite ends ofthe shell, the intake compartments being opposed to one another and in communication with the intake opening of the valve casing,and the exhaust compartments being in communica tion with the exhaust openings of the Valve casing, each shell being formed with a longi; tudinal port communicating with the intake compartment thereof and adapted to register with' a cylinder port when the Valve is rotated, said port havinga front Wall paralleling the axis of the Valve casing and a rear Wall inclined to the front Wall whereby a quick opening of the cylinder port results,

-said port being gradually closed toward 'the intake end of the. valve, each shell being also formed with an opening communicating with the exhaust compartment thereof and adapted to register with a cylinder port.

2. ln combination with an internal combustion engine cylinder formed with an elongated, port, a valve casing formed around said "port andparalleling the same,

`and a. rotary Valve housed Within said casing having a. cylindrical shell open at each 'los end and di'vided longitudinally into an intakeA compartment and an exhaust compartment, said compartments being closed at one end and opening upon opposite ends of the valve, the casing being :formed With an intake port 1n continuous communication with the intake compartment of the Valve and` with an .exhaust port in continuous oommunication with theY exhaust-compartment of the valve, the shell haiing a longitudinal port commnnicating With the intake opening or ythe Valve 'and tapering toward the ist inner end of said. opening, the shell also having; a longitudinal port eoilnnunieating with the exhaust compartment of the valve and tapering toward the inner end thereof7 the forward Walls of Said 'open-V ings paralleling the cylinder port, a rotation of the 'alve causing the openings'to alternately register with said cylinder port.

1n combination with a two cylinder internal eolx'ihustion engine having a port formed in each Cylinder, va cylindrical valve .Casing formed around said port parallel with the same, the easing` being formed eentrally of its ends with an intake opening and adjacent its ends with exhaust openings, cover plates closing the ends of said valve easing, exhaust pipes carried by-said plates,

a valve shaft journaled through the plate and runninglongitudinally of the valve easv index-s, an annular flange formed on the interior of the valve easing eentrallyotl its ends for engagement by the inner endsI of the valve, and locking rings threaded into the ends of the valve' easing for engagement with the outer ends of the valve.

ln testimony where'olZ I aiiix my signature in presence of two witnesses.

' CHARLES R. SPENCER. Witnesses:

Trios. J. HairrsoN, J. M. SANDERS. 

